Electric elderly leisure vehicle folding seat

Abstract

The invention discloses a folding seat for an electric leisure vehicle for the elderly, including a backrest frame, a cushion frame, and a seat folding device. The seat folding device includes left and right main brackets, an upper bracket, left and right lower brackets, and a shock absorber. The two ends of the left and right main brackets are hinged on the front supports on both sides of the cushion frame and the frame. The upper parts of the left and right lower brackets are rotatably connected to the upper bracket, and the lower parts are hinged on the rear supports on both sides of the frame. The shock absorber is hinged between the cushion frame and the upper bracket. The left and right main brackets are provided with inner lock holes and track grooves respectively. The central tube of the upper bracket is provided with a spring and spring pins on both sides of the spring. The spring pins are provided with lock column sections that match the inner lock holes and guide column sections that match the track grooves respectively. The guide column sections extend out of the track grooves and are connected to the locking mechanism. After adopting the above structure, it has the advantages of reasonable structural design, simple operation, fast and convenient folding, reliable connection, and small folding volume.

Description

Technical Field

[0001] The invention relates to the technical field of electric leisure vehicles for the elderly, in particular to a folding seat of an electric leisure vehicle for the elderly with a foldable seat cushion. Background Art

[0002] Electric leisure vehicles for the elderly are a means of transportation with a speed between that of electric wheelchairs and electric motorcycles. They are popular among the elderly due to their low center of gravity, stable driving, beautiful appearance, and slightly faster speed than wheelchairs. However, the existing electric leisure vehicles for the elderly have the problem of large size and inconvenience in carrying because the seats cannot be folded. They cannot be placed in the trunk of a car and carried with the car, which further limits the consumer group for leisure travel. Therefore, many manufacturers and knowledgeable people have developed and researched to solve the above problems, but no satisfactory products have been released so far. Summary of the invention

[0003] In order to overcome the above-mentioned problems existing in the prior art, the purpose of the present invention is to provide a folding seat for an electric elderly leisure vehicle with reasonable structural design, simple operation, quick and convenient folding, reliable connection and small folding volume.

[0004] The present invention creates a technical solution adopted to solve the above-mentioned technical problems. It includes a backrest frame, a cushion frame, and a seat folding device. The seat folding device includes left and right main frames, an upper frame, left and right lower frames, and a shock absorber. The two ends of the left and right main frames are correspondingly hinged on the two sides of the rear end of the cushion frame and the front supports on both sides of the frame. The upper parts of the left and right lower frames are rotatably connected to the upper frame, and the lower parts thereof are correspondingly hinged on the rear supports on both sides of the frame. The two ends of the shock absorber are correspondingly hinged between the cushion frame and the upper frame. The left and right main frames are correspondingly provided with inner lock holes and track grooves. A spring and elastic pins on both sides of the spring are provided in the central tube of the upper frame. The elastic pins are correspondingly provided with lock column sections matching the inner lock holes and guide column sections matching the track grooves. The guide column sections extend out of the track grooves and are connected with the locking mechanism.

[0005] A further solution created by the present invention is that the locking mechanism includes a locking buckle ring fixed on the main bracket and a handle button rotatably connected to the guide column section, and the locking buckle ring is provided with a notch matching the width direction of the handle button; when in the locked state, the lock column section is locked on the inner lock hole, the guide column section matches the notch of the locking buckle ring, the handle of the handle button is in the opposite direction of the notch of the locking buckle ring, and the handle button is locked and cannot be pressed; when in the unlocked state, the lock column section is locked on the inner lock hole, the guide column section matches the notch of the locking buckle ring, the handle of the handle button is in the same direction of the notch of the locking buckle ring, and when the handle button is pressed, the spring pin retracts, and the lock column section is separated from the inner lock hole to achieve unlocking.

[0006] According to a further solution created by the present invention, the locking buckle ring is provided with upper and lower limit protrusions corresponding to prevent the handle button from rotating freely.

[0007] According to a further solution of the present invention, a folding positioning seat for positioning the seat cushion frame when the seat is folded is provided on the vehicle frame.

[0008] According to a further solution of the present invention, a folding seat is provided between the backrest frame and the cushion frame, and the backrest frame can be opened clockwise and folded counterclockwise.

[0009] After adopting the above structure, compared with the prior art, the following advantages and effects are achieved: First, the seat folding can be quickly realized through the seat folding device, and the seat folding device can be quickly locked and unlocked through the locking mechanism. The folding is fast and convenient, and the locking is safe and reliable. Second, since the left and right main brackets are provided with inner lock holes and track grooves respectively, the central tube of the upper bracket is provided with a spring and elastic pins on both sides of the spring, and the elastic pins are provided with lock column sections that cooperate with the inner lock holes and guide column sections that cooperate with the track grooves respectively. When unfolded for use, the lock column sections cooperate with the inner lock holes to ensure the reliability of connection and use. Third, since the upper and lower limit protrusions are provided on the locking buckle, the handle button can be prevented from rotating freely and causing malfunctions. Fourth, since the frame is provided with a folding positioning seat, it can be used as a positioning seat for seat folding to ensure smooth folding. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 The present invention is a three-dimensional structural schematic diagram when it is in an unfolded state.

[0011] Figure 2 The main structural diagram of the invention is created in the unfolded state.

[0012] Figure 3 The present invention provides a schematic diagram of the matching structure when the upper bracket is in a locked state.

[0013] Figure 4 The present invention is a schematic diagram of a three-dimensional structure when in a folded state.

[0014] Among them, 1 is a backrest frame, 2 is a folding seat, 3 is a cushion frame, 4 is a shock absorber, 5 is an upper bracket, 6 is a spring, 7 is a spring pin, 8 is a main bracket, 9 is a locking buckle, 10 is a handle button, 11 is a folding positioning seat, 12 is a rear support, 13 is a lower support, 14 is a track groove, 15 is a front support, 16 is a frame, 17 is a limiting protrusion, 18 is a guide column section, 19 is a locking column section, and 20 is an inner lock hole. DETAILED DESCRIPTION

[0015] Figures 1 to 4As shown, the present invention creates a specific implementation scheme of a folding seat for an electric elderly leisure vehicle, which includes a backrest frame 1, a cushion frame 3, and a seat folding device. The seat folding device includes left and right main brackets 8, an upper bracket 5, left and right lower brackets 13, and a shock absorber 4. The two ends of the left and right main brackets 8 are correspondingly hinged on the front supports 15 on both sides of the rear end of the cushion frame 3 and on both sides of the frame 16. The upper parts of the left and right lower brackets 13 are rotatably connected to the upper bracket 5, and the lower parts thereof are correspondingly hinged on the rear supports 12 on both sides of the frame 16. The two ends of the shock absorber 4 are correspondingly hinged between the cushion frame 3 and the upper bracket 5. The left and right main brackets 8 are correspondingly provided with inner lock holes 20 and track grooves 14. The central tube of the upper bracket 5 is provided with a spring 6 and elastic pins 7 on both sides of the spring 6. The elastic pin 7 is correspondingly provided with a lock column section 19 that cooperates with the inner lock hole 20 and a guide column section 18 that cooperates with the track groove 14. The guide column section 18 extends out of the track groove 14 and is connected to the locking mechanism.

[0016] In order to ensure safe and reliable locking, the locking mechanism includes a locking buckle ring 9 fixed to the main bracket 8 and a handle button 10 rotatably connected to the guide column section 18. The locking buckle ring 9 is provided with a notch that matches the width direction of the handle button 10; in the locked state, the locking column section 19 is locked on the inner lock hole 20, the guide column section 18 matches the notch of the locking buckle ring 9, the handle of the handle button 10 is in the opposite direction of the notch of the locking buckle ring 9, and the handle button 10 is locked and cannot be pressed; in the unlocked state, the locking column section 19 is locked on the inner lock hole 20, the guide column section 18 matches the notch of the locking buckle ring 9, the handle of the handle button 10 is in the same direction of the notch of the locking buckle ring 9, and when the handle button 10 is pressed, the spring pin 7 retracts, and the locking column section 19 is separated from the inner lock hole 20 to achieve unlocking.

[0017] In order to prevent misoperation, the locking ring 9 is provided with upper and lower limit protrusions 17 to prevent the handle button 10 from rotating freely.

[0018] In order to ensure smooth and reliable folding, the frame 16 is provided with a folding positioning seat 11 for positioning the seat cushion frame 3 when the seat is folded.

[0019] In order to facilitate the folding of the backrest frame 1, a folding seat 2 is provided between the backrest frame 1 and the seat cushion frame 3, which can open the backrest frame 1 clockwise and fold the backrest frame 1 counterclockwise.

[0020] The folding operation principle of the invention is as follows: first, the backrest frame 1 is folded onto the cushion frame 3 by rotating the folding seat 2 counterclockwise, then the handle buttons 10 on the left and right sides are rotated to overcome the restrictions of the upper and lower limit protrusions 17, and the handle buttons 10 are rotated from the opposite direction of the notch of the locking buckle 9 to the same direction parallel to the track groove 14, then the index fingers of both hands press the handle buttons 10 on the left and right sides and drive the corresponding elastic pins 7 to overcome the elastic force of the spring 6 and move inward, so that the locking column sections 19 of the elastic pins 7 on the left and right sides are separated from the inner locking holes 20 on the corresponding main bracket 8 to achieve Unlock, and then press the upper bracket 5 and the lower bracket 13 with the thumbs of both hands to make the guide column sections 18 on the upper bracket 5 and the elastic pins 7 on the left and right sides move downward along the track groove 14 of the main bracket 8. At this time, the lower bracket 13 rotates counterclockwise around the rear support 12, and the main bracket 8 rotates clockwise around the front support 15. The seat cushion frame 3 moves downward and rotates clockwise under the drive of the upper bracket 5. After reaching the bottom, it rotates clockwise with the hinge point of the shock absorber 4 and the upper bracket 5 as the center until the seat cushion frame 3 is buckled in the folding positioning seat 11, thereby realizing the folding of the seat folding device.

[0021] The unfolding operation principle of the present invention is as follows: grab the front part of the cushion frame 3 with the left hand, grab the rear part of the cushion frame 3 with the right hand, and pull it upward with force until the spring pins 7 on the left and right sides pop out automatically, so that the locking column section 19 of the spring pin 7 is locked in the inner locking hole 20 of the main bracket 8 to prevent the main bracket 8 from sinking, and the cushion frame 3 is unfolded at the same time; rotate the handle buttons 10 on the left and right sides to overcome the restrictions of the upper and lower limit protrusions 17, and turn the handle buttons 10 from the same direction of the notch of the locking buckle 9 to the opposite direction, so that it is located between the upper and lower limit protrusions 17 of the handle button 10, and finally the backrest frame 1 is unfolded by rotating the folding seat 2 clockwise, thereby realizing the unfolding and locking of the seat folding device.

[0022] The above is only a specific embodiment of the present invention and does not limit the present invention in any form. Simple modifications, equivalent changes or modifications made without departing from the technical solution of the present invention are all within the protection scope of the present invention.

Claims

1. A folding seat for an electric leisure vehicle for the elderly, comprising a backrest frame (1), a cushion frame (3), and a seat folding device, wherein: The seat folding device comprises left and right main brackets (8), an upper bracket (5), left and right lower brackets (13), and a shock absorber (4). The two ends of the left and right main brackets (8) are correspondingly hinged to the two sides of the rear end of the seat cushion frame (3) and the front brackets (15) on the two sides of the frame (16). The upper parts of the left and right lower brackets (13) are rotatably connected to the upper bracket (5), and the lower parts thereof are correspondingly hinged to the rear brackets (12) on the two sides of the frame (16). The two ends of the shock absorber (4) are correspondingly hinged to the rear brackets (12) on the two sides of the frame (16). The seat cushion frame (3) and the upper bracket (5) are connected, and the left and right main brackets (8) are provided with inner locking holes (20) and track grooves (14) respectively. A spring (6) and elastic pins (7) on both sides of the spring (6) are provided in the central tube of the upper bracket (5). The elastic pins (7) are provided with locking column sections (19) matched with the inner locking holes (20) and guide column sections (18) matched with the track grooves (14) respectively. The guide column sections (18) extend out of the track grooves (14) and are connected with the locking mechanism.

2. The folding seat of the electric leisure vehicle for the elderly according to claim 1 is characterized by: The locking mechanism comprises a locking buckle (9) fixed to the main bracket (8) and a handle button (10) rotatably connected to the guide column section (18); the locking buckle (9) is provided with a notch matched with the width direction of the handle button (10); in a locked state, the locking column section (19) is locked on the inner lock hole (20), the guide column section (18) matches with the notch of the locking buckle (9), the handle of the handle button (10) is located in the opposite direction of the notch of the locking buckle (9), and the handle button (10) is locked and cannot be pressed; in an unlocked state, the locking column section (19) is locked on the inner lock hole (20), the guide column section (18) matches with the notch of the locking buckle (9), the handle of the handle button (10) is located in the same direction as the notch of the locking buckle (9), when the handle button (10) is pressed, the spring pin (7) retracts, and the locking column section (19) is separated from the inner lock hole (20) to achieve unlocking.

3. The folding seat of the electric leisure vehicle for the elderly according to claim 2 is characterized by: The locking buckle ring (9) is provided with upper and lower limit protrusions (17) correspondingly for preventing the handle button (10) from rotating freely.

4. The folding seat of the electric leisure vehicle for the elderly according to claim 1, 2 or 3, characterized in that: The frame (16) is provided with a folding positioning seat (11) for positioning the seat cushion frame (3) when the seat is folded.

5. The folding seat of the electric leisure vehicle for the elderly according to claim 4 is characterized by: A folding seat (2) is provided between the backrest frame (1) and the cushion frame (3), and the backrest frame (1) can be opened clockwise and folded counterclockwise.

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